Correct Answer - Option 3 : 8
Given:
When a shopkeeper sold 12 articles for Rs 1800 he incurred a loss of 10%.
Formula Used:
{Number of items×(1 +/– Profit% or Loss%)}/(Cost price/Selling price) = Constant
Calculation:
Let the number of articles he should sell be x. Now apply the above-given formula
⇒ {12×(1 – 10%)}/1800 = {x × (1 + 20%)}/1600
⇒ (12×90%)/1800 = (x × 120%)/1600
⇒ x = 8 articles
∴ The number of articles he should sell are 8